It is a little bit flimsier than I thought, my Canon 7D with battery grip is holding up ok but it is struggling a bit, will probably be a bit better without the grip. But then again I paid a little over 2 bucks, it's very usable for the money if you just use it indoors where the camera can't fall off a cliff or something. Works fine for product photography.
It is made from plastic. Not so strong.